// 云函数入口文件
const cloud = require('wx-server-sdk')

cloud.init({ env: cloud.DYNAMIC_CURRENT_ENV }) // 使用当前云环境

const db = cloud.database()
// 云函数入口函数
exports.main = async (event, context) => {
   const openid = event.openid
   const name = event.class
   
   return await db.collection(name).where({
       _openid:openid
   }).orderBy('time','desc').get({})
}